- Connect to server by ssh
sss root@<your servier ip>
Navigate to cd public_html/wp-content
sudo mkdir uploads
Change the owner and group of the uploads folder to www-data by executing this command:
chmod 755 -R uploads chown -R www-data:www-data uploads
Done, now try to upload file again.
For plugin and theme install or updates
sudo chown -R www-data:www-data /var/www/html/example.com